Improvement in pumps



f UNIT-,E15 STATnsP-ATENT )FFICEV n. A.` JEFFERY" AND J, D; QUAcKENBUsH, on Genuine, NEW YORK,

Q NASSIGNORS TO J. D. QUACKENBUSH.

|ivinuovi-:iviENT IN PUMPS.

Specification forming part of Letters Patent No. 35,522, dated June 10,1802.

To all when?) it ni/ayccnceit:

` Be it .known that we, E, A. JEFFERY and J. D. QUAcirENBusH, "of Corning, in the county `of Steuben audStateof New York, have invented a new and Improved Force-Pump;` and we do hereby'declare that the "following :is a

full and exact description thereof, reference being had to the accompanying drawings, making part of this specification, in which` Figure 1 is a vertical `longitudinal section with the pistonin elevation. Fig.` 2 is an enlarged sectionalview ofthe central portion of the cylinder and packing device the piston being removed. Fig; 3 is a transverse section of the cylinder and packing-rings on the line x x of Fig. l. Fig. 4 `is an enlarged section of `one end of the cylinder, showing the method of packing the piston-rod and the water communication therewith. L

`Similarletters designate corresponding parts "iin all of thegures. y j

As represented in Vthe drawings, A A repesent the cylinder, B the induction-pipe, and C the `discharge-passague .through `the air-cham ber; rlhe piston E is a cylinder closed atboth ends, so that no water is'admitted to its inte` rior. The position of the cylinder is horizon# i tal, though it may be used vertically, the valvechambers being arranged at cach end in sepa rate castings D D. The central portion, H, of the cylinder, which receives the packing for `the piston, is also cast separately, andthe two sections A A are secured to the end or valve portions of the pump by the tiangese e, which are held by bolts and packing in the usual manner; but they are connected with the centralportion, H, by male and female screws a a. The connectingpipes F F and G G enter socketsin the middle and end castings, and, packing being provided at the ends thereof, `are rendered tight by screwing the cylindersections A A into .the .central portion, H, which compresses the packing against the ends of the pipes. This arrangement not only adlnits of tightening thepacking by screwing up the parts A A, but of readily changing them fromiron to brass or copper cylinders, and vice versa, as may be required. u

The piston E being a smooth cylinder is packed from the outsideewholly by means of two rings, I) b, of rubber or other suitably-elastic material. These rings are faced upon the inside with iiat plates c c, of brass or copper in the form of rings, but their ends not united, which prevents the adhesion of the piston and rubber and the wearing of the latter. rubber rings lie in a chamber' or enlargement of thecylinder formed in the casting H, and

`occupying the space between them are two admitv water to enter from the discharge-pas` sage C, which is in communication therewith, and fill all the spacesin theinterior ofthe packingchamber and around the piston, so as to render the packing `very perfect and complete.

These rubber rings serve also to pack the joints a a where the cylinders are screwed in, the screw-rin gs pressing them firmly against those points. The turning of one ringto accomplish this result is effected by inserting a rod orl Wrench in the dischargeopening C.

It will beseeu by reference to Fig. 3 that the water passes nearly or quite around the packing-rings, thereby having ready access through all the apertures t' i. This mode of packing secures perfect tightness between the cylinder and piston, and permits of the easy working of the latter on account of the `friction which it dispenses with.

As the piston reciprocates the water alternately enters eachend of the cylinders by the passages G G through the ball-valves I, l, asa vacuum is formed at either end, and is 'forced out through the valves J J in the same manner. TheA flow being continuous there is coustant and nearly uniform pressure in thedischarge-pipes F F, and this is applied tothe special purpose *of excluding theair from entering the cylinders around the piston-rod,"by

formingapassage, K, by whichthe water, af-v the space around the rod L and packing o in t-he stufng-box. As the dischargepressure These A is always outward at that point, when that pressure is greater than the suction, the tendeney Will always be for Water to pass out at the stuffing-box, and thereby prevent air from passing in.

As it is desirable to exclude the water from re-entering the cylinder from the stufngbox, provision is made by inserting a small perforated tube, p, which surrounds the piston-rod, the inner end resti ng on a gasket ot' india-rub`- ber, r, or othersuitable material, and the outer end forming the bottom of the stuffing-box. The water enters the perforations of the tube, filling every interstiee and preserving a perfeet vacuum in the cylinder.

Vhat We claim as our invention, and desire to secure by Letters Patent, is-

l. The combination and arrangement of the cylinder A with the parts constituting the valve-chambers D D, and with the packingcliamber H, so as to secure the suction and discharge pipes G G and F F in sockets in their respective parts, substantially in tlie manner and for the purposes shown and described.

2. The india-rubber rings b b and perforated screw-rings d el, so constructed and arranged as by their compression to pack not only the piston, but the `ioints a c of the cylinder, substantiall y as shown and described.

3. The passage K for admitting Water to the stuffing-box of the piston-rod and maintaining it there under the discharge-pressure of the pump, substantially as and for the purposes set forth.

4. In combination with the foregoing, the perforated tube p and gasket r for excluding Water from entering the cylinder from the stuffing-box, substantially as set forth.

E. A. JEFFERY. J. D. QUAGKENB USI-I.

Witnesses:

WM. H. CLARK, H. PAGE. 

